org.apache.log4j.helpers.DateTimeDateFormat Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.log4j.helpers;
import java.text.DateFormatSymbols;
import java.text.FieldPosition;
import java.text.ParsePosition;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
/**
* Formats a {@link Date} in the format "dd MMM yyyy HH:mm:ss,SSS" for example, "06 Nov 1994 15:49:37,459".
*
* @since 0.7.5
*/
public class DateTimeDateFormat extends AbsoluteTimeDateFormat {
private static final long serialVersionUID = 5547637772208514971L;
String[] shortMonths;
public DateTimeDateFormat() {
super();
shortMonths = new DateFormatSymbols().getShortMonths();
}
public DateTimeDateFormat(final TimeZone timeZone) {
this();
setCalendar(Calendar.getInstance(timeZone));
}
/**
* Appends to sbuf the date in the format "dd MMM yyyy HH:mm:ss,SSS" for example, "06 Nov 1994
* 08:49:37,459".
*
* @param sbuf the string buffer to write to
*/
@Override
public StringBuffer format(final Date date, final StringBuffer sbuf, final FieldPosition fieldPosition) {
calendar.setTime(date);
final int day = calendar.get(Calendar.DAY_OF_MONTH);
if (day < 10) {
sbuf.append('0');
}
sbuf.append(day);
sbuf.append(' ');
sbuf.append(shortMonths[calendar.get(Calendar.MONTH)]);
sbuf.append(' ');
final int year = calendar.get(Calendar.YEAR);
sbuf.append(year);
sbuf.append(' ');
return super.format(date, sbuf, fieldPosition);
}
/**
* Always returns null.
*/
@Override
public Date parse(final String s, final ParsePosition pos) {
return null;
}
}